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Ruthenium vs Thallium

Ruthenium
Thallium
Thallium vs Ruthenium


Periodic Table
Symbol
Ru  
Tl  
Group Number
8  
10
13  
5
Period Number
5  
6  
Block
d block  
p block  
Element Family
Transition Metal  
Post-​Transition  
CAS Number
7440188  
99+
7440280  
99+
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Ruthenium element has been extracted from used nuclear fuel.
  • Ruthenium metal also produces as a by-product of the Nickel mining.
  
  • Compounds of Thallium metal are highly Toxic.
  • Thallium metal is being suspected as a human carcinogen.
  
Sources
By-product of Nickel Refining, Found in Minerals, Mining  
Found As a By-product, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Karl Ernst Claus  
William Crookes  
Discovery
In 1844  
In 1861  
Abundance
  
  
Abundance In Universe
0.00 %  
21
0.00 %  
33
Abundance In Sun
0.00 %  
22
0.00 %  
26
Abundance In Meteorites
0.00 %  
26
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
38
0.00 %  
34
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • It is used for producing chip resistors and contact.
  • Ruthenium oxide is used to coat the anodes cells for chlorine production in chemical industry. It also works as catalysts for ammonia and acetic acid reaction.
  
  • Thallium is a toxic metal and hence it has limited uses. Thallium metal is mostly used for producing photoelectric cells.
  • In thermometer’s mercury alloy has 8% of thallium, as it has a melting point lower than 20°C.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Chemical Industry  
Medical Uses
Medical Research  
Medical Research  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Highly Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
38
Physical
Melting Point
2,250.00 °C  
8
303.50 °C  
99+
Boiling Point
3,900.00 °C  
14
1,457.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
6.50  
5
1.20  
21
Brinell Hardness
2,160.00 MPa  
3
26.50 MPa  
99+
Vickers Hardness
1,160.00 MPa  
14
120.00 MPa  
99+
Speed of Sound
5,970.00 m/s  
7
818.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.60  
4
1.90  
18
Reflectivity
6.00 %  
38
8.00 %  
37
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ru  
Tl  
Isotopes
  
  
Known Isotopes
26  
13
32  
7
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
1.62  
22
Sanderson Electronegativity
2.20  
8
2.25  
6
Allred Rochow Electronegativity
1.42  
19
1.44  
18
Mulliken-Jaffe Electronegativity
2.20  
6
1.96  
11
Allen Electronegativity
1.54  
28
1.79  
16
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
2.38  
33
Ionization Energies
  
  
1st Energy Level
710.20 kJ/mol  
32
589.40 kJ/mol  
99+
2nd Energy Level
710.22 kJ/mol  
99+
1,971.00 kJ/mol  
14
3rd Energy Level
2,747.00 kJ/mol  
38
2,878.00 kJ/mol  
32
4th Energy Level
7,107.00 kJ/mol  
12
5,890.00 kJ/mol  
17
5th Energy Level
7,107.00 kJ/mol  
27
5,890.00 kJ/mol  
99+
6th Energy Level
7,107.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
7th Energy level
7,100.00 kJ/mol  
37
5,890.00 kJ/mol  
99+
8th Energy Level
4,700.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
9th Energy Level
5,600.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
10th Energy Level
7,100.00 kJ/mol  
35
5,890.00 kJ/mol  
99+
11th Energy Level
7,197.00 kJ/mol  
32
5,890.00 kJ/mol  
99+
12th Energy Level
7,190.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
13th Energy Level
7,100.00 kJ/mol  
29
5,890.00 kJ/mol  
99+
14th Energy Level
710.00 kJ/mol  
99+
5,890.00 kJ/mol  
37
15th Energy Level
71,000.00 kJ/mol  
25
58,900.00 kJ/mol  
99+
16th Energy Level
71,000.00 kJ/mol  
21
58,900.00 kJ/mol  
38
17th Energy Level
710.20 kJ/mol  
99+
589.40 kJ/mol  
99+
18th Energy Level
7,100.00 kJ/mol  
31
5,890.00 kJ/mol  
99+
19th Energy Level
710.20 kJ/mol  
38
589.40 kJ/mol  
99+
20th Energy Level
710.00 kJ/mol  
32
589.00 kJ/mol  
99+
21st Energy Level
710.20 kJ/mol  
99+
589.40 kJ/mol  
99+
22nd Energy Level
710.00 kJ/mol  
26
589.00 kJ/mol  
99+
23rd Energy Level
710.20 kJ/mol  
99+
589.40 kJ/mol  
99+
24th Energy Level
710.20 kJ/mol  
25
589.40 kJ/mol  
99+
25th Energy Level
710.00 kJ/mol  
26
589.40 kJ/mol  
99+
26th Energy Level
710.20 kJ/mol  
25
589.40 kJ/mol  
99+
27th Energy Level
710.20 kJ/mol  
25
589.40 kJ/mol  
99+
28th Energy Level
710.20 kJ/mol  
30
589.40 kJ/mol  
99+
29th Energy Level
710.20 kJ/mol  
31
589.40 kJ/mol  
99+
30th Energy Level
710.00 kJ/mol  
25
589.40 kJ/mol  
99+
Electrochemical Equivalent
1.26 g/amp-hr  
99+
7.63 g/amp-hr  
2
Electron Work Function
4.71 eV  
14
3.84 eV  
39
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
44  
99+
81  
35
Electron Configuration
[Kr] 4d7 5s1  
[Xe] 4f14 5d10 6s2 6p1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
rystal-Structure-of-Ruthenium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
44  
99+
81  
35
Number of Neutrons
57  
99+
123  
21
Number of Electrons
44  
99+
81  
35
Radius of an Atom
  
  
Atomic Radius
134.00 pm  
99+
170.00 pm  
24
Covalent Radius
146.00 pm  
40
145.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
196.00 pm  
37
Atomic Weight
101.07 amu  
99+
204.38 amu  
31
Atomic Volume
8.30 cm3/mol  
99+
17.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Technetium
  
Mercury
  
Next Element
Rhodium
  
Lead
  
Valence Electron Potential
64.00 (-eV)  
22
9.60 (-eV)  
99+
Lattice Constant
270.59 pm  
99+
345.66 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.58  
33
1.60  
23
Mechanical
Density
  
  
Density At Room Temperature
12.45 g/cm3  
29
11.85 g/cm3  
33
Density When Liquid (at m.p.)
10.65 g/cm3  
37
11.22 g/cm3  
33
Tensile Strength
50.00 MPa  
38
47.00 MPa  
39
Viscosity
0.00  
25
0.00  
22
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
16.90 (Pa)  
5
Vapor Pressure at 2000 K
0.00 (Pa)  
23
0.00 (Pa)  
38
Elasticity properties
  
  
Shear Modulus
173.00 GPa  
4
2.80 GPa  
99+
Bulk Modulus
220.00 GPa  
7
43.00 GPa  
33
Young's Modulus
447.00 GPa  
3
8.00 GPa  
99+
Poisson Ratio
0.30  
14
0.45  
2
Other Mechanical Properties
Ductile, Malleable  
Ductile, Sectile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
12.45  
31
11.85  
35
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
28
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
71.00 nΩ·m  
38
0.18 nΩ·m  
99+
Electrical Conductivity
0.14 106/cm Ω  
18
0.06 106/cm Ω  
37
Electron Affinity
101.30 kJ/mol  
11
19.20 kJ/mol  
38
Thermal
Specific Heat
0.24 J/(kg K)  
24
0.13 J/(kg K)  
40
Molar Heat Capacity
24.06 J/mol·K  
99+
26.32 J/mol·K  
37
Thermal Conductivity
117.00 W/m·K  
13
46.10 W/m·K  
33
Critical Temperature
2,607.00 K  
9
577.00 K  
99+
Thermal Expansion
6.40 µm/(m·K)  
99+
29.90 µm/(m·K)  
12
Enthalpy
  
  
Enthalpy of Vaporization
567.80 kJ/mol  
13
162.10 kJ/mol  
99+
Enthalpy of Fusion
25.50 kJ/mol  
7
4.27 kJ/mol  
99+
Enthalpy of Atomization
603.00 kJ/mol  
10
179.90 kJ/mol  
99+
Standard Molar Entropy
28.50 J/mol.K  
99+
64.20 J/mol.K  
20
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